Lighting-fixture.



e. M. SMITHA LIGHTING FIXTURE.

APP-LIATIQN m50V IAN. 2oA 1917.

E. Patented. Nov. 27. 1913?.

hmmm? i Jilin@ i tisana 'rc :taormina other .application filed Januaryt, 23.917.

To all whom 'may concer/a. Be it known that l? @Estreno M. un, a citizenet the United States, and a reeident of the city, county, and State ci?New t York, (formerly of ChicagoJ1 illinois) have invented a certain newand useful Lighting Fixture, of which the following is a specinca-tion.

My invention relates to lighting xtures 1o and more particularly todevices used in indirect and semi-indirect, illumination in which anopaque or translucent globe or bowl is suspended below a reflector insuch a lmanner that the direct rays of light are te prevented fromreaching the eyes of the observer and in which no shadows of interveningobjects will be cast upon the reector, or upon the ceiling if a reectorbe not employed.

2o The object ofmy invention is to produce 4 a lighting fixture having aglobe howl supported below a ceiling or other reiiecting surface in sucha manner that the supporting means are inconspicuous. 2e A furtherobject is to provide means whereby the globe or bowl may be easilyapplied to or removed from the iiirture by :means which are locatedoutside of the tixture. to These and further objects will more fullyappear in the following specification and accompanying drawingsconsidered together or separately. I

li have illustrated one embodiment of my 35 invention in theaccompanying drawings in which like parts are designated by similar vreference characters in all of the figures, and

in which l Figure 1 is a sectional view of a lighting to fixtureembodying iny invention.

Fig. 2 is a detail sectional view of the support guide-thimble, thesection being taken on the line yindicated by 2-2 in Fig. Fig. 3 is asimilar view of the support to loclingsleeve, the section being taken atthe point of the greatest diameter of the sleeve.

F ig. 4 is a top plan view of the shade supporting Shelly-and Fig. 5 isa detail view of a modification.

50 lin carrying out my -invention I provide a base 1 secured to theceiling 2 and covering' a. junction box 3. in the rembodiment `of theinvention illustrated this base is formed of sheet metalA and of conicalform.. .t5 To 'the lower extremity oi the base is sepecication orLetters .Fate-nt.

restanten nea at'. 'ile-as..

ite. 143,475.

cured by screws el or otherwise a'thimble 5. The lower extremity of thethimble is closed by means of a plate 6 and an outwardly ein tendingperipheral flange 7 extends around the lower edge of the thimble. Thedange t@ 7 is provided with a plurality of radial slots 8, three beingshown. The body of the thimble is perforated at 9. The perform tions arethree in number and each is in vertical alinement with a slot 8. ln each65 perforation 9 the hooked end of a spring arm 10 engages. The arms.'Xtend vertically downward and pass through the guide slots 8. The armsare then cuved outward and their tree ends terminate in hooks which 7oengage a head or iiange 11 on the upper edge of'a globe or bowl 12.

- Secured to the upper part of the thimble 5 by means of a bayonet joint13 is a shell 14 in the lower end of which a reflector or 'it artificialceiling 15 is secured by means of screws 16 or otherwise.

A locking sleeve 17 surrounds the tiinble 5 and isrotatable relativelythereto. The sleeve is secured in place by means of a bead 80 18 turnedover the peripery oi' the Flange 7. A plurality of earns 18, one foreach spring arm 10 is carried by the lower end oi the locking sleeve andone disposed below the plate 6 and flange 'i'. The cams contact withSti`v the spring arms and secure them against spreading. ne of the camsis provided with a notch 19 near its high part. The upper extremity ofthe sleeve 17 is provided with two fingers 20, which project through il@slots 21 in the shell 14. The fingers 20 are accessible from outside ofthe fixture and the sleeve may be rotated and the arms 10 may beadjusted to be engaged with or disengaged froln th'e bowl l2 withrapidity and 95 ease and without dismantling the structure.

Secured within the lower extremity of the .base 1 above the thimble 5 isa ring 22 to which is secured a socket. rlhe socket is composed of twoparts 23 and 24 secured 1100 together by means of screws 25 orotherwise.` The upper part of thev section .23 oi the socket is reducedin diameter and this reduced portion. forms, when the two parts aresecured together, a circumferential tot groove 26 with which the ring 22engages and supports the socket. A lighting element 27 is secured in thesocket inthe usual manner. t

The bowl or globe is so positioned relait@ 'concave upper surface of thebowl together with rays of light from the lamp' which have not been soreflected willzbe cast on the lower surface of the reflector l5, andthence reflectedlinto the room or other space to be illuminated. Theconcave surface of the bowl is rendered diffusive by having itsreflective surface brokenl up by means of ribs or corrugations, orbysand blasting or acid etching, and the .diffused light reflected fromthe bowl will scatter and disperse the shadows of the arms 10 and noshadows or halations will be cast upon the surface of the reflector 15.

For indirect lighting the outer surface of the bowl may be silvered andthe silver protected by paint or other suitable covering. Forsemi-indirect lighting the bowl is translucent 'so that some of thelight may pass throughit and be diused.

The spring supporting arms are given a reverse curve relatively 'to thecurves of the bowl so that when the fixture is viewed from the floorthey will be hidden by theedge of the bowl which will appear to'befreely suspended in the air. The arms are fashioned of thin spring metalso that the shadows cast by them will be insignificant and easily dis.

4will engage the flange on the bowl and the arms will be held in thatposition. When the arms are locked in engagementwiththe bowl, one of thearms will engage the notch 19 and prevent accidental rotationl of thesleeve. When it is desired to release the bowl from the armsconsiderable force will be required to-rotate the sleeve to release thearm from the notch. The sleeve may now be rotated in the anti clock-wisedirection and the natural spring of the arms will release'the hooks attheir ends rfrom the flange of the bowl.

The bottom plate 6 is 'treated in the same manner as is the surface ofthe reflector whereby the reflector will appear to have a continuoussurface broken only by the thin wire arms and the stem of the lamp.

Instead of the open cams 18a the locking sleeve 17 may be provided witha bottom flange member 28 which is provided with cam slots v29corresponding to the cams 18a. The spring arms 10 pass through the slots29 and the arms may be moved toward or away from the center of thesleeve as 'the latter is rotated in one direction or the other. One ofthe .slots is provided with a jig car- 'rying a notch'similar to thenotch Ai9 to have it understood that the appaiatus f shown is merelyillustrative, and that, the invention may, be Carried out'in otherways'.

Having thus'described my invention what l now claim and desire-to secure-Letters Patent, is:

1. A lighting fixture having e. support, a lighting element, a globe orsurrotmding the. element,` al member carried by the support, armscarriedf'by. the .mancher and supportingthe globe orbowl, a reiiectorsup ported by the member in opposed relation to; the globe or bowl, saidmember having a re' ecting surface in linewith vsaidreflector.

v 2. A lighting xture having a support, a lighting element, a globe orbowl surrourai- `ing the element, ameinber carried by the support, armscarried` .by the member and ried by the support, la shell removably se.

cured to the' member, and. a reflector carried by the shell, the saidreflector' having an opening therein, the bottom of the member beingapproximately in line with said rev ector and closing 'the openingwhereby the reflecting surface will be uninterrupted.

4t. A lighting xture, havinga support, a lighting element, a globe orbowl inclosing the element, a thimble carried by the support, aplurality of filamentous .spring arms carried by the thimble, a iange onthe thimble, there being a slot in the flange for the reception of eacharm, a sleeve supported on the flange, a cam carried by the sleeve, forengagement with each arm, a notch in a cam, and means lfor rotating thesleeve to engage the arms with the -bowl to support the same, a shellsurrounding the sleeve, said rotating means extending through the shell,and a reflector carried by the shell,` the thimble having a bottomforming a reflecting surface, and means for removably securing 'theshell to the thimble.

5. lighting fixture, having a support, a lighting element, a globe orbowl inclosing the element, a thimble carried by the support, aplurality ofI filamentous arms carried by the tlnmble, a flange on thethimble, there being a slot in the flange for the reception of each arm,a sleeve supported on the flange, a flange on the sleeve, there being acam slot icc .the Hangs `on thev sleeve, for engagement forming. areectng surface and means for mthfeach arm, there bemg a notch m a slot.removably securing the shel to the `thimble. L@

,s for engagement with an arm, and means for flhs specification signedand. witnessed lxotatmg the Sleeve to engage the arms wlth 'thls twelfthday of January, 1917.

,file b'Qwl to support the same, a shell sur- ESMOND M. SWTH.

'Ioundlng fthesleeve, said 'rotatmg means eX- Witnesses: tending throughthe she11,'a reector carried A. E. REM'ON,

bythe-shells the thmble having al bottom Jams F. Comm.

